High severity7.8NVD Advisory· Published Apr 7, 2021· Updated Jun 17, 2026
CVE-2021-29627
CVE-2021-29627
Description
In FreeBSD 13.0-STABLE before n245050, 12.2-STABLE before r369525, 13.0-RC4 before p0, and 12.2-RELEASE before p6, listening socket accept filters implementing the accf_create callback incorrectly freed a process supplied argument string. Additional operations on the socket can lead to a double free or use after free.
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Affected products
13cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*+ 11 more
- cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*range: >=12.0,<12.2
- cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.0:beta1:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.0:beta2:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.0:beta3:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.0:beta4:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.0:rc3:*:*:*:*:*:*
- (no CPE)range: <13.0-STABLE n245050, <12.2-STABLE r369525, <13.0-RC4 p0, <12.2-RELEASE p6
- FreeBSD/FreeBSDdescription
Patches
Vulnerability mechanics
References
2- security.freebsd.org/advisories/FreeBSD-SA-21:09.accept_filter.ascnvdVendor Advisory
- security.netapp.com/advisory/ntap-20210423-0007/nvdThird Party Advisory
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